Comparing the "3 Walla Walla Watersheds"

• The USGS has identified HUC 17070102 as the Walla Walla River Basin, this is the hydrological area that drains through the Walla Walla River.
• Washington Department of Ecology WRIA 32 is the WRIA system divides Washington state into 62 Water Resource Inventory Areas.
• The Walla Walla Watershed Plan and Walla Walla Watershed Management Partnership focus on the Washington Portion of the Walla Walla River Basin, or WRIA 32 excluding the area that drains directly to the Columbia River.